PlayerPositionAndLookPacket

protocol/src/main/java/mc/protocol/State.java

@@ -51,7 +51,8 @@ public enum State {
 			Map.of(
 					JoinGamePacket.class, 0x23,
 					SpawnPositionPacket.class, 0x46,
-					PlayerAbilitiesPacket.class,0x2C
+					PlayerAbilitiesPacket.class,0x2C,
+					PlayerPositionAndLookPacket.class, 0x2F
 			)
 	);
 

protocol/src/main/java/mc/protocol/model/Look.java

@@ -0,0 +1,11 @@
+package mc.protocol.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+@AllArgsConstructor
+@Data
+public class Look {
+	private float yaw;
+	private float pitch;
+}

protocol/src/main/java/mc/protocol/packets/server/PlayerPositionAndLookPacket.java

@@ -0,0 +1,81 @@
+package mc.protocol.packets.server;
+
+import lombok.Data;
+import mc.protocol.io.NetByteBuf;
+import mc.protocol.model.Location;
+import mc.protocol.model.Look;
+import mc.protocol.packets.ServerSidePacket;
+
+/**
+ * Установка позиции и угла осмотра Игрока.
+ *
+ * <p>Структура пакета</p>
+ * <pre>
+ * | FIELD       | TYPE   | NOTES                                                                             |
+ * |-------------|--------|-----------------------------------------------------------------------------------|
+ * | X           | Double | Абсолютная или относительная позиция по X. Зависит от "Flags"                     |
+ * | Y           | Double | Абсолютная или относительная позиция по Y. Зависит от "Flags"                     |
+ * | Z           | Double | Абсолютная или относительная позиция по Z. Зависит от "Flags"                     |
+ * | Yaw         | Float  | Абсолютный или относительный поворот головы по OX, в градусах. Зависит от "Flags" |
+ * | Pitch       | Float  | Абсолютный или относительный поворот головы по OY, в градусах. Зависит от "Flags" |
+ * | Flags       | Byte   | Битовая маска значений флагов. См. значения ниже                                  |
+ * | Teleport ID | VarInt | ID для подтверждения клиентом перемещения Игрока                                  |
+ * </pre>
+ *
+ * <p>Значения "Flags"</p>
+ * <pre>
+ * | Field | Bit  |
+ * |-------|------|
+ * | X     | 0x01 |
+ * | Y     | 0x02 |
+ * | Z     | 0x04 |
+ * | X_ROT | 0x08 |
+ * | Y_ROT | 0x10 |
+ * </pre>
+ *
+ * <p>Примечание от Dinnerbone про "Flags":</p>
+ * <i>"It's a bitfield, X/Y/Z/Y_ROT/X_ROT. If X is set, the x value is relative and not absolute."</i>
+ *
+ * @see <a href="https://wiki.vg/index.php?title=Protocol&oldid=14204#Player_Position_And_Look_.28clientbound.29">Player Position And Look</a>
+ */
+@Data
+public class PlayerPositionAndLookPacket implements ServerSidePacket {
+
+	private Location position;
+	private Look look;
+	@SuppressWarnings("java:S116")
+	private byte $flags = 0;
+	private int teleportId;
+
+	@Override
+	public void writeSelf(NetByteBuf netByteBuf) {
+		netByteBuf.writeDouble(this.position.getX());
+		netByteBuf.writeDouble(this.position.getY());
+		netByteBuf.writeDouble(this.position.getZ());
+		netByteBuf.writeFloat(this.look.getYaw());
+		netByteBuf.writeFloat(this.look.getPitch());
+		netByteBuf.writeByte(this.$flags);
+		netByteBuf.writeVarInt(teleportId);
+	}
+
+	//FIXME использовать value значения
+	public void setFlagX(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x01);
+	}
+
+	public void setFlagY(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x02);
+	}
+
+	public void setFlagZ(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x04);
+	}
+
+	public void setFlagXRot(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x08);
+	}
+
+	public void setFlagYRot(boolean value) {
+		this.$flags = (byte) (this.$flags | 0x10);
+	}
+}

server/src/main/java/mc/server/PacketHandler.java

@@ -4,6 +4,7 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import mc.protocol.*;
 import mc.protocol.model.Location;
+import mc.protocol.model.Look;
 import mc.protocol.model.ServerInfo;
 import mc.protocol.packets.PingPacket;
 import mc.protocol.packets.client.HandshakePacket;
@@ -59,7 +60,7 @@ public class PacketHandler {
 	public void onLoginStart(ChannelContext<LoginStartPacket> channel) {
 		LoginStartPacket loginStartPacket = channel.getPacket();
 
-		LoginSuccessPacket loginSuccessPacket = new LoginSuccessPacket();
+		var loginSuccessPacket = new LoginSuccessPacket();
 		loginSuccessPacket.setUuid(UUID.randomUUID());
 		loginSuccessPacket.setName(loginStartPacket.getName());
 
@@ -67,7 +68,7 @@ public class PacketHandler {
 		channel.getCtx().writeAndFlush(loginSuccessPacket);
 		channel.setState(State.PLAY);
 
-		JoinGamePacket joinGamePacket = new JoinGamePacket();
+		var joinGamePacket = new JoinGamePacket();
 		joinGamePacket.setEntityId(random.nextInt());
 		joinGamePacket.setGameMode(GameMode.SPECTATOR);
 		joinGamePacket.setDimension(0/*Overworld*/);
@@ -77,13 +78,15 @@ public class PacketHandler {
 		log.info("{}", joinGamePacket);
 		channel.getCtx().write(joinGamePacket);
 
-		SpawnPositionPacket spawnPositionPacket = new SpawnPositionPacket();
+		Location spawnLocation = new Location(0d, 63d, 0d);
-		spawnPositionPacket.setSpawn(new Location(0d, 63d, 0d));
+
+		var spawnPositionPacket = new SpawnPositionPacket();
+		spawnPositionPacket.setSpawn(spawnLocation);
 
 		log.info("{}", spawnPositionPacket);
 		channel.getCtx().write(spawnPositionPacket);
 
-		PlayerAbilitiesPacket playerAbilitiesPacket = new PlayerAbilitiesPacket();
+		var playerAbilitiesPacket = new PlayerAbilitiesPacket();
 		playerAbilitiesPacket.setCatFly(true);
 		playerAbilitiesPacket.setFlying(true);
 		playerAbilitiesPacket.setCreativeMode(false);
@@ -95,6 +98,14 @@ public class PacketHandler {
 		channel.getCtx().write(playerAbilitiesPacket);
 
 		channel.getCtx().flush();
+
+		var playerPositionAndLookPacket = new PlayerPositionAndLookPacket();
+		playerPositionAndLookPacket.setPosition(spawnLocation);
+		playerPositionAndLookPacket.setLook(new Look(0f, 0f));
+		playerPositionAndLookPacket.setTeleportId(random.nextInt());
+
+		log.info("{}", playerPositionAndLookPacket);
+		channel.getCtx().writeAndFlush(playerPositionAndLookPacket);
 	}
 
 	private static String faviconToBase64(Path iconPath) {